feat(front-end and back-end): new nozle option, also fix quantity reload and reorganized service in back-end

2026-03-05 15:01:40 +01:00
parent de9e473cca
commit 1a36808d9f
26 changed files with 712 additions and 87 deletions
--- a/backend/src/main/java/com/printcalculator/controller/CustomQuoteRequestController.java
+++ b/backend/src/main/java/com/printcalculator/controller/CustomQuoteRequestController.java
@@ -5,7 +5,7 @@ import com.printcalculator.entity.CustomQuoteRequest;
 import com.printcalculator.entity.CustomQuoteRequestAttachment;
 import com.printcalculator.repository.CustomQuoteRequestAttachmentRepository;
 import com.printcalculator.repository.CustomQuoteRequestRepository;
-import com.printcalculator.service.ClamAVService;
+import com.printcalculator.service.storage.ClamAVService;
 import com.printcalculator.service.email.EmailNotificationService;
 import jakarta.validation.Valid;
 import org.slf4j.Logger;
--- a/backend/src/main/java/com/printcalculator/controller/OptionsController.java
+++ b/backend/src/main/java/com/printcalculator/controller/OptionsController.java
@@ -3,17 +3,16 @@ package com.printcalculator.controller;
 import com.printcalculator.dto.OptionsResponse;
 import com.printcalculator.entity.FilamentMaterialType;
 import com.printcalculator.entity.FilamentVariant;
-import com.printcalculator.entity.LayerHeightOption;
 import com.printcalculator.entity.MaterialOrcaProfileMap;
 import com.printcalculator.entity.NozzleOption;
 import com.printcalculator.entity.PrinterMachine;
 import com.printcalculator.entity.PrinterMachineProfile;
 import com.printcalculator.repository.FilamentMaterialTypeRepository;
 import com.printcalculator.repository.FilamentVariantRepository;
-import com.printcalculator.repository.LayerHeightOptionRepository;
 import com.printcalculator.repository.MaterialOrcaProfileMapRepository;
 import com.printcalculator.repository.NozzleOptionRepository;
 import com.printcalculator.repository.PrinterMachineRepository;
+import com.printcalculator.service.NozzleLayerHeightPolicyService;
 import com.printcalculator.service.OrcaProfileResolver;
 import org.springframework.http.ResponseEntity;
 import org.springframework.transaction.annotation.Transactional;
@@ -24,6 +23,7 @@ import org.springframework.web.bind.annotation.RestController;
 import java.math.BigDecimal;
 import java.util.Comparator;
 import java.util.List;
+import java.util.Map;
 import java.util.Set;
 import java.util.stream.Collectors;

@@ -32,26 +32,26 @@ public class OptionsController {

    private final FilamentMaterialTypeRepository materialRepo;
    private final FilamentVariantRepository variantRepo;
-    private final LayerHeightOptionRepository layerHeightRepo;
    private final NozzleOptionRepository nozzleRepo;
    private final PrinterMachineRepository printerMachineRepo;
    private final MaterialOrcaProfileMapRepository materialOrcaMapRepo;
    private final OrcaProfileResolver orcaProfileResolver;
+    private final NozzleLayerHeightPolicyService nozzleLayerHeightPolicyService;

    public OptionsController(FilamentMaterialTypeRepository materialRepo,
                             FilamentVariantRepository variantRepo,
-                             LayerHeightOptionRepository layerHeightRepo,
                             NozzleOptionRepository nozzleRepo,
                             PrinterMachineRepository printerMachineRepo,
                             MaterialOrcaProfileMapRepository materialOrcaMapRepo,
-                             OrcaProfileResolver orcaProfileResolver) {
+                             OrcaProfileResolver orcaProfileResolver,
+                             NozzleLayerHeightPolicyService nozzleLayerHeightPolicyService) {
        this.materialRepo = materialRepo;
        this.variantRepo = variantRepo;
-        this.layerHeightRepo = layerHeightRepo;
        this.nozzleRepo = nozzleRepo;
        this.printerMachineRepo = printerMachineRepo;
        this.materialOrcaMapRepo = materialOrcaMapRepo;
        this.orcaProfileResolver = orcaProfileResolver;
+        this.nozzleLayerHeightPolicyService = nozzleLayerHeightPolicyService;
    }

    @GetMapping("/api/calculator/options")
@@ -116,15 +116,6 @@ public class OptionsController {
                new OptionsResponse.InfillPatternOption("cubic", "Cubic")
        );

-        List<OptionsResponse.LayerHeightOptionDTO> layers = layerHeightRepo.findAll().stream()
-                .filter(l -> Boolean.TRUE.equals(l.getIsActive()))
-                .sorted(Comparator.comparing(LayerHeightOption::getLayerHeightMm))
-                .map(l -> new OptionsResponse.LayerHeightOptionDTO(
-                        l.getLayerHeightMm().doubleValue(),
-                        String.format("%.2f mm", l.getLayerHeightMm())
-                ))
-                .toList();
-
        List<OptionsResponse.NozzleOptionDTO> nozzles = nozzleRepo.findAll().stream()
                .filter(n -> Boolean.TRUE.equals(n.getIsActive()))
                .sorted(Comparator.comparing(NozzleOption::getNozzleDiameterMm))
@@ -137,7 +128,31 @@ public class OptionsController {
                ))
                .toList();

-        return ResponseEntity.ok(new OptionsResponse(materialOptions, qualities, patterns, layers, nozzles));
+        Map<BigDecimal, List<BigDecimal>> rulesByNozzle = nozzleLayerHeightPolicyService.getActiveRulesByNozzle();
+        BigDecimal selectedNozzle = nozzleLayerHeightPolicyService.resolveNozzle(
+                nozzleDiameter != null ? BigDecimal.valueOf(nozzleDiameter) : null
+        );
+
+        List<OptionsResponse.LayerHeightOptionDTO> layers = toLayerDtos(rulesByNozzle.getOrDefault(selectedNozzle, List.of()));
+        if (layers.isEmpty()) {
+            layers = rulesByNozzle.values().stream().findFirst().map(this::toLayerDtos).orElse(List.of());
+        }
+
+        List<OptionsResponse.NozzleLayerHeightOptionsDTO> layerHeightsByNozzle = rulesByNozzle.entrySet().stream()
+                .map(entry -> new OptionsResponse.NozzleLayerHeightOptionsDTO(
+                        entry.getKey().doubleValue(),
+                        toLayerDtos(entry.getValue())
+                ))
+                .toList();
+
+        return ResponseEntity.ok(new OptionsResponse(
+                materialOptions,
+                qualities,
+                patterns,
+                layers,
+                nozzles,
+                layerHeightsByNozzle
+        ));
    }

    private Set<Long> resolveCompatibleMaterialTypeIds(Long printerMachineId, Double nozzleDiameter) {
@@ -152,9 +167,9 @@ public class OptionsController {
            return Set.of();
        }

-        BigDecimal nozzle = nozzleDiameter != null
-                ? BigDecimal.valueOf(nozzleDiameter)
-                : BigDecimal.valueOf(0.40);
+        BigDecimal nozzle = nozzleLayerHeightPolicyService.resolveNozzle(
+                nozzleDiameter != null ? BigDecimal.valueOf(nozzleDiameter) : null
+        );

        PrinterMachineProfile machineProfile = orcaProfileResolver
                .resolveMachineProfile(machine, nozzle)
@@ -172,6 +187,16 @@ public class OptionsController {
                .collect(Collectors.toSet());
    }

+    private List<OptionsResponse.LayerHeightOptionDTO> toLayerDtos(List<BigDecimal> layers) {
+        return layers.stream()
+                .sorted(Comparator.naturalOrder())
+                .map(layer -> new OptionsResponse.LayerHeightOptionDTO(
+                        layer.doubleValue(),
+                        String.format("%.2f mm", layer)
+                ))
+                .toList();
+    }
+
    private String resolveHexColor(FilamentVariant variant) {
        if (variant.getColorHex() != null && !variant.getColorHex().isBlank()) {
            return variant.getColorHex();
--- a/backend/src/main/java/com/printcalculator/controller/OrderController.java
+++ b/backend/src/main/java/com/printcalculator/controller/OrderController.java
@@ -3,12 +3,12 @@ package com.printcalculator.controller;
 import com.printcalculator.dto.*;
 import com.printcalculator.entity.*;
 import com.printcalculator.repository.*;
-import com.printcalculator.service.InvoicePdfRenderingService;
+import com.printcalculator.service.payment.InvoicePdfRenderingService;
 import com.printcalculator.service.OrderService;
-import com.printcalculator.service.PaymentService;
-import com.printcalculator.service.QrBillService;
-import com.printcalculator.service.StorageService;
-import com.printcalculator.service.TwintPaymentService;
+import com.printcalculator.service.payment.PaymentService;
+import com.printcalculator.service.payment.QrBillService;
+import com.printcalculator.service.storage.StorageService;
+import com.printcalculator.service.payment.TwintPaymentService;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.util.StringUtils;
--- a/backend/src/main/java/com/printcalculator/controller/QuoteController.java
+++ b/backend/src/main/java/com/printcalculator/controller/QuoteController.java
@@ -4,17 +4,23 @@ import com.printcalculator.entity.PrinterMachine;
 import com.printcalculator.model.PrintStats;
 import com.printcalculator.model.QuoteResult;
 import com.printcalculator.repository.PrinterMachineRepository;
+import com.printcalculator.service.NozzleLayerHeightPolicyService;
 import com.printcalculator.service.QuoteCalculator;
 import com.printcalculator.service.SlicerService;
+import com.printcalculator.service.storage.ClamAVService;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
+import org.springframework.web.server.ResponseStatusException;

-import java.util.Map;
-import java.util.HashMap;
 import java.io.IOException;
+import java.math.BigDecimal;
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.util.HashMap;
+import java.util.Map;
+
+import static org.springframework.http.HttpStatus.BAD_REQUEST;

@RestController
 public class QuoteController {
@@ -22,17 +28,23 @@ public class QuoteController {
    private final SlicerService slicerService;
    private final QuoteCalculator quoteCalculator;
    private final PrinterMachineRepository machineRepo;
-    private final com.printcalculator.service.ClamAVService clamAVService;
+    private final ClamAVService clamAVService;
+    private final NozzleLayerHeightPolicyService nozzleLayerHeightPolicyService;

    // Defaults (using aliases defined in ProfileManager)
    private static final String DEFAULT_FILAMENT = "pla_basic";
    private static final String DEFAULT_PROCESS = "standard";

-    public QuoteController(SlicerService slicerService, QuoteCalculator quoteCalculator, PrinterMachineRepository machineRepo, com.printcalculator.service.ClamAVService clamAVService) {
+    public QuoteController(SlicerService slicerService,
+                           QuoteCalculator quoteCalculator,
+                           PrinterMachineRepository machineRepo,
+                           ClamAVService clamAVService,
+                           NozzleLayerHeightPolicyService nozzleLayerHeightPolicyService) {
        this.slicerService = slicerService;
        this.quoteCalculator = quoteCalculator;
        this.machineRepo = machineRepo;
        this.clamAVService = clamAVService;
+        this.nozzleLayerHeightPolicyService = nozzleLayerHeightPolicyService;
    }

    @PostMapping("/api/quote")
@@ -69,15 +81,27 @@ public class QuoteController {
        if (infillPattern != null && !infillPattern.isEmpty()) {
            processOverrides.put("sparse_infill_pattern", infillPattern);
        }
+        BigDecimal normalizedNozzle = nozzleLayerHeightPolicyService.resolveNozzle(
+                nozzleDiameter != null ? BigDecimal.valueOf(nozzleDiameter) : null
+        );
        if (layerHeight != null) {
-            processOverrides.put("layer_height", String.valueOf(layerHeight));
+            BigDecimal normalizedLayer = nozzleLayerHeightPolicyService.normalizeLayer(BigDecimal.valueOf(layerHeight));
+            if (!nozzleLayerHeightPolicyService.isAllowed(normalizedNozzle, normalizedLayer)) {
+                throw new ResponseStatusException(
+                        BAD_REQUEST,
+                        "Layer height " + normalizedLayer.stripTrailingZeros().toPlainString()
+                                + " is not allowed for nozzle " + normalizedNozzle.stripTrailingZeros().toPlainString()
+                                + ". Allowed: " + nozzleLayerHeightPolicyService.allowedLayersLabel(normalizedNozzle)
+                );
+            }
+            processOverrides.put("layer_height", normalizedLayer.stripTrailingZeros().toPlainString());
        }
        if (supportEnabled != null) {
            processOverrides.put("enable_support", supportEnabled ? "1" : "0");
        }

        if (nozzleDiameter != null) {
-            machineOverrides.put("nozzle_diameter", String.valueOf(nozzleDiameter));
+            machineOverrides.put("nozzle_diameter", normalizedNozzle.stripTrailingZeros().toPlainString());
            // Also need to ensure the printer profile is compatible or just override?
            // Usually nozzle diameter changes require a different printer profile or deep overrides.
            // For now, we trust the override key works on the base profile.
--- a/backend/src/main/java/com/printcalculator/controller/QuoteSessionController.java
+++ b/backend/src/main/java/com/printcalculator/controller/QuoteSessionController.java
@@ -14,9 +14,11 @@ import com.printcalculator.repository.PrinterMachineRepository;
 import com.printcalculator.repository.QuoteLineItemRepository;
 import com.printcalculator.repository.QuoteSessionRepository;
 import com.printcalculator.service.OrcaProfileResolver;
+import com.printcalculator.service.NozzleLayerHeightPolicyService;
 import com.printcalculator.service.QuoteCalculator;
 import com.printcalculator.service.QuoteSessionTotalsService;
 import com.printcalculator.service.SlicerService;
+import com.printcalculator.service.storage.ClamAVService;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.transaction.annotation.Transactional;
@@ -61,8 +63,9 @@ public class QuoteSessionController {
    private final FilamentMaterialTypeRepository materialRepo;
    private final FilamentVariantRepository variantRepo;
    private final OrcaProfileResolver orcaProfileResolver;
+    private final NozzleLayerHeightPolicyService nozzleLayerHeightPolicyService;
    private final com.printcalculator.repository.PricingPolicyRepository pricingRepo;
-    private final com.printcalculator.service.ClamAVService clamAVService;
+    private final ClamAVService clamAVService;
    private final QuoteSessionTotalsService quoteSessionTotalsService;

    public QuoteSessionController(QuoteSessionRepository sessionRepo,
@@ -73,8 +76,9 @@ public class QuoteSessionController {
                                  FilamentMaterialTypeRepository materialRepo,
                                  FilamentVariantRepository variantRepo,
                                  OrcaProfileResolver orcaProfileResolver,
+                                  NozzleLayerHeightPolicyService nozzleLayerHeightPolicyService,
                                  com.printcalculator.repository.PricingPolicyRepository pricingRepo,
-                                  com.printcalculator.service.ClamAVService clamAVService,
+                                  ClamAVService clamAVService,
                                  QuoteSessionTotalsService quoteSessionTotalsService) {
        this.sessionRepo = sessionRepo;
        this.lineItemRepo = lineItemRepo;
@@ -84,6 +88,7 @@ public class QuoteSessionController {
        this.materialRepo = materialRepo;
        this.variantRepo = variantRepo;
        this.orcaProfileResolver = orcaProfileResolver;
+        this.nozzleLayerHeightPolicyService = nozzleLayerHeightPolicyService;
        this.pricingRepo = pricingRepo;
        this.clamAVService = clamAVService;
        this.quoteSessionTotalsService = quoteSessionTotalsService;
@@ -167,7 +172,23 @@ public class QuoteSessionController {
                applyPrintSettings(settings);
            }

-            BigDecimal nozzleDiameter = BigDecimal.valueOf(settings.getNozzleDiameter() != null ? settings.getNozzleDiameter() : 0.4);
+            BigDecimal nozzleDiameter = nozzleLayerHeightPolicyService.resolveNozzle(
+                    settings.getNozzleDiameter() != null ? BigDecimal.valueOf(settings.getNozzleDiameter()) : null
+            );
+            BigDecimal layerHeight = nozzleLayerHeightPolicyService.resolveLayer(
+                    settings.getLayerHeight() != null ? BigDecimal.valueOf(settings.getLayerHeight()) : null,
+                    nozzleDiameter
+            );
+            if (!nozzleLayerHeightPolicyService.isAllowed(nozzleDiameter, layerHeight)) {
+                throw new ResponseStatusException(
+                        BAD_REQUEST,
+                        "Layer height " + layerHeight.stripTrailingZeros().toPlainString()
+                                + " is not allowed for nozzle " + nozzleDiameter.stripTrailingZeros().toPlainString()
+                                + ". Allowed: " + nozzleLayerHeightPolicyService.allowedLayersLabel(nozzleDiameter)
+                );
+            }
+            settings.setNozzleDiameter(nozzleDiameter.doubleValue());
+            settings.setLayerHeight(layerHeight.doubleValue());

            // Pick machine (selected machine if provided, otherwise first active)
            PrinterMachine machine = resolvePrinterMachine(settings.getPrinterMachineId());
@@ -190,7 +211,7 @@ public class QuoteSessionController {
            if (!cadSession) {
                session.setMaterialCode(selectedVariant.getFilamentMaterialType().getMaterialCode());
                session.setNozzleDiameterMm(nozzleDiameter);
-                session.setLayerHeightMm(BigDecimal.valueOf(settings.getLayerHeight() != null ? settings.getLayerHeight() : 0.2));
+                session.setLayerHeightMm(layerHeight);
                session.setInfillPattern(settings.getInfillPattern());
                session.setInfillPercent(settings.getInfillDensity() != null ? settings.getInfillDensity().intValue() : 20);
                session.setSupportsEnabled(settings.getSupportsEnabled() != null ? settings.getSupportsEnabled() : false);
@@ -209,7 +230,7 @@ public class QuoteSessionController {
            
            // Build overrides map from settings
            Map<String, String> processOverrides = new HashMap<>();
-            if (settings.getLayerHeight() != null) processOverrides.put("layer_height", String.valueOf(settings.getLayerHeight()));
+            processOverrides.put("layer_height", layerHeight.stripTrailingZeros().toPlainString());
            if (settings.getInfillDensity() != null) processOverrides.put("sparse_infill_density", settings.getInfillDensity() + "%");
            if (settings.getInfillPattern() != null) processOverrides.put("sparse_infill_pattern", settings.getInfillPattern());

@@ -289,6 +310,10 @@ public class QuoteSessionController {
    }

    private void applyPrintSettings(com.printcalculator.dto.PrintSettingsDto settings) {
+        if (settings.getNozzleDiameter() == null) {
+            settings.setNozzleDiameter(0.40);
+        }
+
        if ("BASIC".equalsIgnoreCase(settings.getComplexityMode())) {
            // Set defaults based on Quality
            String quality = settings.getQuality() != null ? settings.getQuality().toLowerCase() : "standard";
@@ -313,7 +338,6 @@ public class QuoteSessionController {
            }
        } else {
            // ADVANCED Mode: Use values from Frontend, set defaults if missing
-            if (settings.getLayerHeight() == null) settings.setLayerHeight(0.20);
            if (settings.getInfillDensity() == null) settings.setInfillDensity(20.0);
            if (settings.getInfillPattern() == null) settings.setInfillPattern("grid");
        }
--- a/backend/src/main/java/com/printcalculator/controller/admin/AdminOrderController.java
+++ b/backend/src/main/java/com/printcalculator/controller/admin/AdminOrderController.java
@@ -12,10 +12,10 @@ import com.printcalculator.event.OrderShippedEvent;
 import com.printcalculator.repository.OrderItemRepository;
 import com.printcalculator.repository.OrderRepository;
 import com.printcalculator.repository.PaymentRepository;
-import com.printcalculator.service.InvoicePdfRenderingService;
-import com.printcalculator.service.PaymentService;
-import com.printcalculator.service.QrBillService;
-import com.printcalculator.service.StorageService;
+import com.printcalculator.service.payment.InvoicePdfRenderingService;
+import com.printcalculator.service.payment.PaymentService;
+import com.printcalculator.service.payment.QrBillService;
+import com.printcalculator.service.storage.StorageService;
 import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.core.io.Resource;
 import org.springframework.http.ContentDisposition;
@@ -34,7 +34,6 @@ import org.springframework.web.server.ResponseStatusException;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.InvalidPathException;
 import java.nio.file.Path;
-import java.nio.file.Paths;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
--- a/backend/src/main/java/com/printcalculator/dto/OptionsResponse.java
+++ b/backend/src/main/java/com/printcalculator/dto/OptionsResponse.java
@@ -7,7 +7,8 @@ public record OptionsResponse(
    List<QualityOption> qualities,
    List<InfillPatternOption> infillPatterns,
    List<LayerHeightOptionDTO> layerHeights,
-    List<NozzleOptionDTO> nozzleDiameters
+    List<NozzleOptionDTO> nozzleDiameters,
+    List<NozzleLayerHeightOptionsDTO> layerHeightsByNozzle
 ) {
    public record MaterialOption(String code, String label, List<VariantOption> variants) {}
    public record VariantOption(
@@ -24,4 +25,5 @@ public record OptionsResponse(
    public record InfillPatternOption(String id, String label) {}
    public record LayerHeightOptionDTO(double value, String label) {}
    public record NozzleOptionDTO(double value, String label) {}
+    public record NozzleLayerHeightOptionsDTO(double nozzleDiameter, List<LayerHeightOptionDTO> layerHeights) {}
 }
--- a/backend/src/main/java/com/printcalculator/entity/NozzleLayerHeightOption.java
+++ b/backend/src/main/java/com/printcalculator/entity/NozzleLayerHeightOption.java
@@ -0,0 +1,63 @@
+package com.printcalculator.entity;
+
+import jakarta.persistence.*;
+import org.hibernate.annotations.ColumnDefault;
+
+import java.math.BigDecimal;
+
+@Entity
+@Table(
+        name = "nozzle_layer_height_option",
+        uniqueConstraints = @UniqueConstraint(
+                name = "ux_nozzle_layer_height_option_nozzle_layer",
+                columnNames = {"nozzle_diameter_mm", "layer_height_mm"}
+        )
+)
+public class NozzleLayerHeightOption {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "nozzle_layer_height_option_id", nullable = false)
+    private Long id;
+
+    @Column(name = "nozzle_diameter_mm", nullable = false, precision = 4, scale = 2)
+    private BigDecimal nozzleDiameterMm;
+
+    @Column(name = "layer_height_mm", nullable = false, precision = 5, scale = 3)
+    private BigDecimal layerHeightMm;
+
+    @ColumnDefault("true")
+    @Column(name = "is_active", nullable = false)
+    private Boolean isActive;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public BigDecimal getNozzleDiameterMm() {
+        return nozzleDiameterMm;
+    }
+
+    public void setNozzleDiameterMm(BigDecimal nozzleDiameterMm) {
+        this.nozzleDiameterMm = nozzleDiameterMm;
+    }
+
+    public BigDecimal getLayerHeightMm() {
+        return layerHeightMm;
+    }
+
+    public void setLayerHeightMm(BigDecimal layerHeightMm) {
+        this.layerHeightMm = layerHeightMm;
+    }
+
+    public Boolean getIsActive() {
+        return isActive;
+    }
+
+    public void setIsActive(Boolean isActive) {
+        this.isActive = isActive;
+    }
+}
--- a/backend/src/main/java/com/printcalculator/event/listener/OrderEmailListener.java
+++ b/backend/src/main/java/com/printcalculator/event/listener/OrderEmailListener.java
@@ -8,9 +8,9 @@ import com.printcalculator.event.OrderShippedEvent;
 import com.printcalculator.event.PaymentConfirmedEvent;
 import com.printcalculator.event.PaymentReportedEvent;
 import com.printcalculator.repository.OrderItemRepository;
-import com.printcalculator.service.InvoicePdfRenderingService;
-import com.printcalculator.service.QrBillService;
-import com.printcalculator.service.StorageService;
+import com.printcalculator.service.payment.InvoicePdfRenderingService;
+import com.printcalculator.service.payment.QrBillService;
+import com.printcalculator.service.storage.StorageService;
 import com.printcalculator.service.email.EmailNotificationService;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
--- a/backend/src/main/java/com/printcalculator/repository/NozzleLayerHeightOptionRepository.java
+++ b/backend/src/main/java/com/printcalculator/repository/NozzleLayerHeightOptionRepository.java
@@ -0,0 +1,10 @@
+package com.printcalculator.repository;
+
+import com.printcalculator.entity.NozzleLayerHeightOption;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+
+public interface NozzleLayerHeightOptionRepository extends JpaRepository<NozzleLayerHeightOption, Long> {
+    List<NozzleLayerHeightOption> findByIsActiveTrueOrderByNozzleDiameterMmAscLayerHeightMmAsc();
+}
--- a/backend/src/main/java/com/printcalculator/service/NozzleLayerHeightPolicyService.java
+++ b/backend/src/main/java/com/printcalculator/service/NozzleLayerHeightPolicyService.java
@@ -0,0 +1,143 @@
+package com.printcalculator.service;
+
+import com.printcalculator.entity.NozzleLayerHeightOption;
+import com.printcalculator.repository.NozzleLayerHeightOptionRepository;
+import org.springframework.stereotype.Service;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+
+@Service
+public class NozzleLayerHeightPolicyService {
+    private static final BigDecimal DEFAULT_NOZZLE = BigDecimal.valueOf(0.40).setScale(2, RoundingMode.HALF_UP);
+    private static final BigDecimal DEFAULT_LAYER = BigDecimal.valueOf(0.20).setScale(3, RoundingMode.HALF_UP);
+
+    private final NozzleLayerHeightOptionRepository ruleRepo;
+
+    public NozzleLayerHeightPolicyService(NozzleLayerHeightOptionRepository ruleRepo) {
+        this.ruleRepo = ruleRepo;
+    }
+
+    public Map<BigDecimal, List<BigDecimal>> getActiveRulesByNozzle() {
+        List<NozzleLayerHeightOption> rules = ruleRepo.findByIsActiveTrueOrderByNozzleDiameterMmAscLayerHeightMmAsc();
+        if (rules.isEmpty()) {
+            return fallbackRules();
+        }
+
+        Map<BigDecimal, List<BigDecimal>> byNozzle = new LinkedHashMap<>();
+        for (NozzleLayerHeightOption rule : rules) {
+            BigDecimal nozzle = normalizeNozzle(rule.getNozzleDiameterMm());
+            BigDecimal layer = normalizeLayer(rule.getLayerHeightMm());
+            if (nozzle == null || layer == null) {
+                continue;
+            }
+            byNozzle.computeIfAbsent(nozzle, ignored -> new ArrayList<>()).add(layer);
+        }
+
+        byNozzle.values().forEach(this::sortAndDeduplicate);
+        return byNozzle;
+    }
+
+    public BigDecimal normalizeNozzle(BigDecimal value) {
+        if (value == null) {
+            return null;
+        }
+        return value.setScale(2, RoundingMode.HALF_UP);
+    }
+
+    public BigDecimal normalizeLayer(BigDecimal value) {
+        if (value == null) {
+            return null;
+        }
+        return value.setScale(3, RoundingMode.HALF_UP);
+    }
+
+    public BigDecimal resolveNozzle(BigDecimal requestedNozzle) {
+        return normalizeNozzle(requestedNozzle != null ? requestedNozzle : DEFAULT_NOZZLE);
+    }
+
+    public BigDecimal resolveLayer(BigDecimal requestedLayer, BigDecimal nozzleDiameter) {
+        if (requestedLayer != null) {
+            return normalizeLayer(requestedLayer);
+        }
+        return defaultLayerForNozzle(nozzleDiameter);
+    }
+
+    public List<BigDecimal> allowedLayersForNozzle(BigDecimal nozzleDiameter) {
+        BigDecimal nozzle = resolveNozzle(nozzleDiameter);
+        List<BigDecimal> allowed = getActiveRulesByNozzle().get(nozzle);
+        return allowed != null ? allowed : List.of();
+    }
+
+    public boolean isAllowed(BigDecimal nozzleDiameter, BigDecimal layerHeight) {
+        BigDecimal layer = normalizeLayer(layerHeight);
+        if (layer == null) {
+            return false;
+        }
+        return allowedLayersForNozzle(nozzleDiameter)
+                .stream()
+                .anyMatch(allowed -> allowed.compareTo(layer) == 0);
+    }
+
+    public BigDecimal defaultLayerForNozzle(BigDecimal nozzleDiameter) {
+        List<BigDecimal> allowed = allowedLayersForNozzle(nozzleDiameter);
+        if (allowed.isEmpty()) {
+            return DEFAULT_LAYER;
+        }
+
+        BigDecimal preferred = normalizeLayer(DEFAULT_LAYER);
+        for (BigDecimal candidate : allowed) {
+            if (candidate.compareTo(preferred) == 0) {
+                return candidate;
+            }
+        }
+        return allowed.get(0);
+    }
+
+    public String allowedLayersLabel(BigDecimal nozzleDiameter) {
+        List<BigDecimal> allowed = allowedLayersForNozzle(nozzleDiameter);
+        if (allowed.isEmpty()) {
+            return "none";
+        }
+        return allowed.stream()
+                .map(value -> String.format(Locale.ROOT, "%.2f", value))
+                .reduce((a, b) -> a + ", " + b)
+                .orElse("none");
+    }
+
+    private void sortAndDeduplicate(List<BigDecimal> values) {
+        values.sort(Comparator.naturalOrder());
+        for (int i = values.size() - 1; i > 0; i--) {
+            if (values.get(i).compareTo(values.get(i - 1)) == 0) {
+                values.remove(i);
+            }
+        }
+    }
+
+    private Map<BigDecimal, List<BigDecimal>> fallbackRules() {
+        Map<BigDecimal, List<BigDecimal>> fallback = new LinkedHashMap<>();
+        fallback.put(scaleNozzle(0.20), scaleLayers(0.04, 0.06, 0.08, 0.10, 0.12));
+        fallback.put(scaleNozzle(0.40), scaleLayers(0.08, 0.12, 0.16, 0.20, 0.24, 0.28));
+        fallback.put(scaleNozzle(0.60), scaleLayers(0.16, 0.20, 0.24, 0.30, 0.36));
+        fallback.put(scaleNozzle(0.80), scaleLayers(0.20, 0.28, 0.36, 0.40, 0.48, 0.56));
+        return fallback;
+    }
+
+    private BigDecimal scaleNozzle(double value) {
+        return BigDecimal.valueOf(value).setScale(2, RoundingMode.HALF_UP);
+    }
+
+    private List<BigDecimal> scaleLayers(double... values) {
+        List<BigDecimal> scaled = new ArrayList<>();
+        for (double value : values) {
+            scaled.add(BigDecimal.valueOf(value).setScale(3, RoundingMode.HALF_UP));
+        }
+        return scaled;
+    }
+}
--- a/backend/src/main/java/com/printcalculator/service/OrderService.java
+++ b/backend/src/main/java/com/printcalculator/service/OrderService.java
@@ -8,6 +8,10 @@ import com.printcalculator.repository.OrderRepository;
 import com.printcalculator.repository.QuoteLineItemRepository;
 import com.printcalculator.repository.QuoteSessionRepository;
 import com.printcalculator.event.OrderCreatedEvent;
+import com.printcalculator.service.payment.InvoicePdfRenderingService;
+import com.printcalculator.service.payment.PaymentService;
+import com.printcalculator.service.payment.QrBillService;
+import com.printcalculator.service.storage.StorageService;
 import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
--- a/backend/src/main/java/com/printcalculator/service/payment/InvoicePdfRenderingService.java
+++ b/backend/src/main/java/com/printcalculator/service/payment/InvoicePdfRenderingService.java
@@ -1,4 +1,4 @@
-package com.printcalculator.service;
+package com.printcalculator.service.payment;

 import com.openhtmltopdf.pdfboxout.PdfRendererBuilder;
 import com.openhtmltopdf.svgsupport.BatikSVGDrawer;
--- a/backend/src/main/java/com/printcalculator/service/payment/PaymentService.java
+++ b/backend/src/main/java/com/printcalculator/service/payment/PaymentService.java
@@ -1,4 +1,4 @@
-package com.printcalculator.service;
+package com.printcalculator.service.payment;

 import com.printcalculator.entity.Order;
 import com.printcalculator.entity.Payment;
@@ -65,7 +65,7 @@ public class PaymentService {
        payment.setReportedAt(OffsetDateTime.now());
        
        // We intentionally do not update the payment method here based on user input,
-        // because the user cannot reliably determine the actual method without an integration.
+        // because the system cannot reliably determine the actual method without an integration.
        // It will be updated by the backoffice admin manually.

        payment = paymentRepo.save(payment);
--- a/backend/src/main/java/com/printcalculator/service/payment/QrBillService.java
+++ b/backend/src/main/java/com/printcalculator/service/payment/QrBillService.java
@@ -1,13 +1,10 @@
-package com.printcalculator.service;
+package com.printcalculator.service.payment;

 import com.printcalculator.entity.Order;
 import net.codecrete.qrbill.generator.Bill;
-import net.codecrete.qrbill.generator.GraphicsFormat;
 import net.codecrete.qrbill.generator.QRBill;
 import org.springframework.stereotype.Service;

-import java.math.BigDecimal;
-
@Service
 public class QrBillService {

--- a/backend/src/main/java/com/printcalculator/service/payment/TwintPaymentService.java
+++ b/backend/src/main/java/com/printcalculator/service/payment/TwintPaymentService.java
@@ -1,4 +1,4 @@
-package com.printcalculator.service;
+package com.printcalculator.service.payment;

 import io.nayuki.qrcodegen.QrCode;
 import org.springframework.beans.factory.annotation.Value;
--- a/backend/src/main/java/com/printcalculator/service/storage/ClamAVService.java
+++ b/backend/src/main/java/com/printcalculator/service/storage/ClamAVService.java
@@ -1,4 +1,4 @@
-package com.printcalculator.service;
+package com.printcalculator.service.storage;

 import com.printcalculator.exception.VirusDetectedException;
 import org.slf4j.Logger;
--- a/backend/src/main/java/com/printcalculator/service/storage/FileSystemStorageService.java
+++ b/backend/src/main/java/com/printcalculator/service/storage/FileSystemStorageService.java
@@ -1,4 +1,4 @@
-package com.printcalculator.service;
+package com.printcalculator.service.storage;

 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.core.io.Resource;
@@ -7,7 +7,6 @@ import org.springframework.stereotype.Service;
 import org.springframework.web.multipart.MultipartFile;
 import com.printcalculator.exception.StorageException;

-import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
--- a/backend/src/main/java/com/printcalculator/service/storage/StorageService.java
+++ b/backend/src/main/java/com/printcalculator/service/storage/StorageService.java
@@ -1,4 +1,4 @@
-package com.printcalculator.service;
+package com.printcalculator.service.storage;

 import org.springframework.core.io.Resource;
 import org.springframework.web.multipart.MultipartFile;
--- a/backend/src/test/java/com/printcalculator/controller/OrderControllerPrivacyTest.java
+++ b/backend/src/test/java/com/printcalculator/controller/OrderControllerPrivacyTest.java
@@ -8,12 +8,12 @@ import com.printcalculator.repository.OrderRepository;
 import com.printcalculator.repository.PaymentRepository;
 import com.printcalculator.repository.QuoteLineItemRepository;
 import com.printcalculator.repository.QuoteSessionRepository;
-import com.printcalculator.service.InvoicePdfRenderingService;
+import com.printcalculator.service.payment.InvoicePdfRenderingService;
 import com.printcalculator.service.OrderService;
-import com.printcalculator.service.PaymentService;
-import com.printcalculator.service.QrBillService;
-import com.printcalculator.service.StorageService;
-import com.printcalculator.service.TwintPaymentService;
+import com.printcalculator.service.payment.PaymentService;
+import com.printcalculator.service.payment.QrBillService;
+import com.printcalculator.service.storage.StorageService;
+import com.printcalculator.service.payment.TwintPaymentService;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
--- a/backend/src/test/java/com/printcalculator/controller/admin/AdminOrderControllerStatusValidationTest.java
+++ b/backend/src/test/java/com/printcalculator/controller/admin/AdminOrderControllerStatusValidationTest.java
@@ -6,10 +6,10 @@ import com.printcalculator.entity.Order;
 import com.printcalculator.repository.OrderItemRepository;
 import com.printcalculator.repository.OrderRepository;
 import com.printcalculator.repository.PaymentRepository;
-import com.printcalculator.service.InvoicePdfRenderingService;
-import com.printcalculator.service.PaymentService;
-import com.printcalculator.service.QrBillService;
-import com.printcalculator.service.StorageService;
+import com.printcalculator.service.payment.InvoicePdfRenderingService;
+import com.printcalculator.service.payment.PaymentService;
+import com.printcalculator.service.payment.QrBillService;
+import com.printcalculator.service.storage.StorageService;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
--- a/backend/src/test/java/com/printcalculator/event/listener/OrderEmailListenerTest.java
+++ b/backend/src/test/java/com/printcalculator/event/listener/OrderEmailListenerTest.java
@@ -4,9 +4,9 @@ import com.printcalculator.entity.Customer;
 import com.printcalculator.entity.Order;
 import com.printcalculator.event.OrderCreatedEvent;
 import com.printcalculator.repository.OrderItemRepository;
-import com.printcalculator.service.InvoicePdfRenderingService;
-import com.printcalculator.service.QrBillService;
-import com.printcalculator.service.StorageService;
+import com.printcalculator.service.payment.InvoicePdfRenderingService;
+import com.printcalculator.service.payment.QrBillService;
+import com.printcalculator.service.storage.StorageService;
 import com.printcalculator.service.email.EmailNotificationService;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;